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A common technique in computational fluid dynamics (CFD) modeling of fire is to assume single step, infinitely fast combustion, in which case the transport equations of all gas species can be combined into one for a single conserved scalar called the
A series of 14 experiments was conducted in 7-story building to evaluate the ability of positive pressure ventilation fans, wind control devices and floor below nozzles to mitigate the hazards of a wind driven fire in a structure. Each experiment started
Propagation of an outdoor fire front in wildland or in a combination of wildland and structural fuels (the so-called wildland-urban interface or WUI fire), can be modeled as an initial-value problem using either a Lagrangian or an Eulerian description. The
This paper discusses the breakthroughs in science and engineering that have brought fire testing technology to its current state of maturity and provides insight into the possibilities for future fire test development by highlighting some areas where
This paper discusses the breakthroughs in science and engineering that have brought fire testing technology to its current state of maturity and provides insight into the possibilities for future fire test development by highlighting some areas where
Erica D. Kuligowski, Richard D. Peacock, Jason D. Averill, Richard W. Bukowski
This workshop provided a forum to discuss research and best practices regarding mass notification message creation and dissemination. The goal of the workshop was to provide a forum where representatives from federal agencies could exchange ideas and
This paper discusses the breakthroughs in science and engineering that have brought fire testing technology to its current state of maturity and provides insight into the possibilities for future fire test development by highlighting some areas where
This paper discusses the breakthroughs in science and engineering that have brought fire testing technology to its current state of maturity and provides insight into the possibilities for future fire test development by highlighting some areas where
Tinh Nguyen, Bastien T. Pellegrin, Alexander J. Shapiro, Xiaohong Gu, Joannie W. Chin
Carbon nanotubes (CNTs) are increasingly incorporated in polymers to enhance their mechanical and electrical properties. However, organic polymers are prone to degrade when exposed to UV radiation. Therefore, CNTs in a polymer nanocomposite could
Samuel L. Manzello, Seul-Hyun Park, Thomas G. Cleary, John R. Shields
Rapidly deployable instrumentation packages are being developed to be used during actual WUI fires to quantify structure ignition mechanisms. The packages are being designed to be placed near a given structure in the WUI and will provide video imaging of a
Samuel L. Manzello, Yoshihiko Hayashi, Takefumi Yoneki, Yu Yamamoto
The present study is concerned with investigating the ignition of ceramic roofing assembles (Spanish tile roofing) to a controlled firebrand attack using the Firebrand Generator. Current standards exist to test ignition of roofing decks to firebrands by
The current work explored how choice of surfactant, fire temperature and processing pressure affect the assembly process for particles in the barrier layer. The underlying assumption was that the nano-structure of the ceramic portion of the barrier layer
Polymer backbone scission reactions were studied computationally using polyethylene macromolecules as prototypes. Classical RRKM modeling, molecular dynamics, transition state theory, and molecular mechanics were used as research tools. The results
This document reports on the test results of an evaluation of the image quality of thermal imaging cameras used by the fire service. The test methods used were consistent with the image quality test methods included in Draft National Fire Protection
** DRAFT FOR PUBLIC COMMENT (for Final Version see NIST TN 1681) ** This document is intended to provide practicing engineers and building code officials with a technical resource that contains the current best practice for fire-resistant design of
Probabilistic models are developed for directional wind speeds in hurricane, thunderstorm, and synoptic wind storms. The models, calibrated to data, are used to generate synthetic directional wind speeds over periods of arbitrary length and to assess the
Microgravity experiments and computations have been conducted to elucidate stabilization and extinguishment mechanisms of methane diffusion flames, in the cup-burner configuration, with CO 2 added gradually to a coflowing air or oxygen-enriched stream. The
This report documents the changes that have been made to the previous structure of the HR_DAD software, thereby developing the program HR_DAD_1.1 capable of calculating efficiently the response of large scale real world tall buildings made up of many
Pool fires are buoyancy-driven diffusion flames fed by the vaporization of a horizontally aligned, condensed-phase fuel. Volatile liquids and solids can serve as fuels for pool fires. The characteristic length of a pool fire is the pool diameter, d. This
Gwon Ko, Anthony Hamins, Matthew Bundy, Erik L. Johnsson, Sung C. Kim, David Lenhert
A mixture fraction analysis is performed to investigate the characteristics of chemical species production in smoky compartment fires burning condensed-phase hydrocarbon fuels. A series of fire experiments were conducted in a 2/5 scale compartment based on
Errata to the NIST Reports of the Federal Building and Fire Investigation of the World Trade Center Disaster,NCSTAR 1A, NIST NCSTAR 1-9, and NIST NCSTAR 1-9A. (January 2009, April 2012 and June 2012) These changes do not alter the findings, conclusions, or
Eight full scale experiments were conducted to examine the impact of wind on fire spread through a multi-room structure and examine the capabilities of wind control devices (WCD) and externally applied water streams to mitigate the hazard. The principle
David L. Urban, Gary A. Ruff, Thomas Cleary, Jiann Yang, George Mulholland, Zeng-guang Yuan
Smoke particle size measurements were obtained under low-gravity conditions by overheating several materials typical of those found in spacecraft. The measurements included integral measurements of the smoke particles and physical sample of the particles